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High-Order Compact Superconducting Dual-Band Bandpass Filters for Radio Astronomy 用于射电天文学的高阶紧凑超导双带带通滤波器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999946
N. Sekiya, K. Sakuma
{"title":"High-Order Compact Superconducting Dual-Band Bandpass Filters for Radio Astronomy","authors":"N. Sekiya, K. Sakuma","doi":"10.23919/apmc55665.2022.9999946","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999946","url":null,"abstract":"A compact high-temperature superconducting 8-pole dual-band bandpass filter (DB-BPF) using shorted stub-loaded hairpin resonator with high selectivity was developed for radio astronomy. Use of a pair of additional coupling elements between the resonators enable us to adjust the coupling coefficient flexibly. Tapped-line and coupled-line coupling was used for flexibly controlling the external Q factor of the first and second passbands. The center frequency of the first and second passbands are 0.8 and 2.0 GHz. The fabricated filter achieved high selectivity and compact size $boldsymbol{(26.6times 45.0} mathbf{mm})$. The experimental results of the DB-BPF were in good agreement with the simulated ones.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126586839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel Wideband Linear-Circular Transmission Type Polarization Converter with Bandwidth Adjustment Including Mechanical Tunability for K-/Ka-Bands 具有K / ka波段机械可调谐带宽调节的新型宽带线圆透射型偏振变换器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000012
Mandala Pavansuth Reddy, Mohammad Abdul Shukoor, Sukomal Dey
{"title":"Novel Wideband Linear-Circular Transmission Type Polarization Converter with Bandwidth Adjustment Including Mechanical Tunability for K-/Ka-Bands","authors":"Mandala Pavansuth Reddy, Mohammad Abdul Shukoor, Sukomal Dey","doi":"10.23919/apmc55665.2022.10000012","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000012","url":null,"abstract":"This work demonstrates a novel linear-circular wideband transmission type polarization converter for K-and Ka-band applications. The unitcell comprises primarily two FSSs on both sides of a thin dielectric substrate. For a linear polarized wave incidence, the transmitted wave is circularly polarized with a minimum 3 dB Axial Ratio (AR) from 19.08-37.27 GHz with a relative bandwidth of 64.56% and near 0 dB AR at two frequencies, 24.4 GHz and 34.8 GHz. The response is angular stable, almost up to 45° for different oblique incidences under Transverse Electric (TE) and Transverse Magnetic (TM) modes. Electric field patterns are also investigated to visualize the circular polarization rotation sense. The unitcell is compact with a structural periodicity of 0.102λL×0.134λL and thickness of 0.051λL, where λL is the free-space wavelength corresponding to the lowest operating frequency. In addition, this design offers a bandwidth tunability feature by adjusting the stub's length at the back FSS. Since the design is miniaturized with 0.697(λ3L/ 1000) volume and wideband stable angular performance made this a potential candidate for real-time satellite applications.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126920926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ka-band Transmitarray with Integrated High-Power Amplifiers for Limited-Scan Applications 用于有限扫描应用的集成高功率放大器的ka波段发射阵列
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999852
Martijn de Kok, A. Bart Smolders, U. Johannsen
{"title":"Ka-band Transmitarray with Integrated High-Power Amplifiers for Limited-Scan Applications","authors":"Martijn de Kok, A. Bart Smolders, U. Johannsen","doi":"10.23919/apmc55665.2022.9999852","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999852","url":null,"abstract":"This paper presents the design of a Ka-band active transmitarray consisting of radiating waveguide elements, a transition from waveguide to PCB, and commercial phase shifters and high-power amplifiers. A unit cell design is presented, which at a size of (0.7 λ)2allows for beamsteering without grating lobes up to around ±20° from broadside. The modeled performance of a 68-element array is presented, demonstrating the feasibility of a 81.6 dBm EIRP at 35 GHz from a 7 cm wide aperture.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125291572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of a Miniaturized Ingestible Antenna With Complex Input Impedance for Biotelemetry Applications 生物遥测应用中具有复杂输入阻抗的小型化可摄取天线的设计
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000019
Hang Wang, Yuan Feng, Yong-xin Guo
{"title":"Design of a Miniaturized Ingestible Antenna With Complex Input Impedance for Biotelemetry Applications","authors":"Hang Wang, Yuan Feng, Yong-xin Guo","doi":"10.23919/apmc55665.2022.10000019","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000019","url":null,"abstract":"In this work, a miniaturized ingestible antenna with differentially-fed configuration is presented. The proposed antenna structure is patterned on a FR4 substrate with a radius of 5 mm. With the use of the inductive circular loop feed and a folded radiating dipole structure, the antenna can be well miniaturized, and maintains a stable complex input impedance which fully covers the 2.45 GHz ISM band. The equivalent circuit model and analysis on the key parameters are also conducted in detail. And the measurement is finally realized by properly assembling the antenna inside the capsule-shaped case for mimicking the practical scenario. The results of both simulation and measurement show smooth changes of the antenna impedance around the ISM band, which indicates a stable impedance matching performance. The proposed antenna geometry can be easily fabricated and tuned for directly matching to the specific transceiver without additional matching circuit, which can be a good candidate for the miniaturized ingestible devices with space constraints.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127915931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topology Optimization of NRD Guide Devices Using Covariance Matrix Adaptation Evolution Strategy 基于协方差矩阵自适应进化策略的NRD导向器件拓扑优化
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000032
Naoya Hieda, A. Iguchi, Y. Tsuji, K. Morimoto, T. Kashiwa
{"title":"Topology Optimization of NRD Guide Devices Using Covariance Matrix Adaptation Evolution Strategy","authors":"Naoya Hieda, A. Iguchi, Y. Tsuji, K. Morimoto, T. Kashiwa","doi":"10.23919/apmc55665.2022.10000032","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000032","url":null,"abstract":"In recent years, topology optimization method has attracted a lot of attention to develop high performance electro-magnetic devices and various kinds of design strategies have been reported. Function expansion based topology optimization developed for design of photonic devices has been used successfully in the design of a variety of photonic devices. On the other hand, when applying this method to NRD guide devices, an appropriate initial solution is often required to find optimal solution due to the multimodal nature of an objective function. In this paper, we combine the function expansion method and the covariance matrix adaptation evolution strategy (CMA-ES) for robust and efficient design of NRD guide devices.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"42 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127990166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A 1.5-6 GHz Continuous Tuned GaAs MMIC Phase Shifter 一种1.5-6 GHz连续调谐GaAs MMIC移相器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999862
Xiaoliang Wu, Jianbo Wang, Jianyu Ye, G. Hua
{"title":"A 1.5-6 GHz Continuous Tuned GaAs MMIC Phase Shifter","authors":"Xiaoliang Wu, Jianbo Wang, Jianyu Ye, G. Hua","doi":"10.23919/apmc55665.2022.9999862","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999862","url":null,"abstract":"This letter presents a 1.5–6 GHz 360° continuous tuned analog phase shifter (PS) block for the 5G application. The analog PS consists of a tunable low-pass network (LPN), a high-pass network (HPN), and an all-pass network (APN). The phase shift response is nearly constant over the operating frequency range. The fabricated analog PS has a low average insertion loss of 6.5 dB, low root-mean-square (rms) phase error less than $< 10.8^{circ}$, and low rms amplitude error less than 0.75 dB between 1.5–6 GHz. The proposed analog PS achieved excellent performance compared with previously reported pass PSs over a wide bandwidth.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128817058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water Content Estimation in Hydrous Soil Using AM Radio Broadcasting Waves 利用调幅无线电波估算含水土壤含水量
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999930
Takuma Kinoshita, F. Kuroki
{"title":"Water Content Estimation in Hydrous Soil Using AM Radio Broadcasting Waves","authors":"Takuma Kinoshita, F. Kuroki","doi":"10.23919/apmc55665.2022.9999930","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999930","url":null,"abstract":"The number of landslides in Japan has been increasing in recent years. The main cause of landslides is to increase the water content in soil and an antenna sensor to receive the AM radio wave has been proposed as a method for estimating soil water content. In this paper, the AM radio wave reception characteristics of this sensor were analyzed numerically From the results of the analysis, this sensor has the potential to predict deep-seated landslides, and the principle of operation of this sensor was clarified.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"25 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132623978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Size Parameters Classification of Loop Current Model of PCB Traces by CNN of Magnetic Near-Field Distribution 磁近场分布CNN对PCB走线回路电流模型的尺寸参数分类
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999857
S. Muroga, Taichi Sasaki, Hidefumi Kamozawa, Yusuke Sato, Takahiro Mikami, Motoshi Tanaka
{"title":"Size Parameters Classification of Loop Current Model of PCB Traces by CNN of Magnetic Near-Field Distribution","authors":"S. Muroga, Taichi Sasaki, Hidefumi Kamozawa, Yusuke Sato, Takahiro Mikami, Motoshi Tanaka","doi":"10.23919/apmc55665.2022.9999857","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999857","url":null,"abstract":"A method of an equivalent loop current modeling of printed circuit board traces and components on printed circuit boards was investigated. A microstrip line (MSL) and parallel lines are used as test benches. The loop current is one of common electromagnetic field source models, and is composed of a signal and a return current in this case. One-dimensional convolutional neural network (CNN) was used as a classifier to estimate the size parameters of the loop current model. The results show a feasibility and necessity for improvement of the equivalent loop current modeling by the machine learning of the near-field information.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131403269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Numerical Investigation of D- band Rectangular Dielectric Waveguides and their Bending Effects D波段矩形介质波导及其弯曲效应的数值研究
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000036
Hiroaki Takahashi, M. Gadringer, Siegfried Krainer, H. Paulitsch, W. Bösch
{"title":"Numerical Investigation of D- band Rectangular Dielectric Waveguides and their Bending Effects","authors":"Hiroaki Takahashi, M. Gadringer, Siegfried Krainer, H. Paulitsch, W. Bösch","doi":"10.23919/apmc55665.2022.10000036","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000036","url":null,"abstract":"This paper presents a numerical characterization of D-band rectangular dielectric waveguides (DWG) commonly used for short-range, high-speed communication links. Propagation characteristics such as $omega-beta$ diagram, group delay and attenuation are examined for two families of dielectric waveguide structures with either a solid or a hollow core using Integral equation solver of CST Microwave Studio. In addition, the impact of bending the waveguide on the loss and phase characteristics are also numerically computed. Finally, we highlight the frequency-dependent propagation characteristics of the DWGs based on their shape and material of the core, and the direction of bending. This summary provide a good insight into the DWG's wave propagation effects.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131511099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Influence of Impedance Matching for the Sensitivity of Reflection Phase Measurements with Resonant Sensors 阻抗匹配对谐振传感器反射相位测量灵敏度的影响
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999867
Birk Hattenhorst, T. Musch
{"title":"On the Influence of Impedance Matching for the Sensitivity of Reflection Phase Measurements with Resonant Sensors","authors":"Birk Hattenhorst, T. Musch","doi":"10.23919/apmc55665.2022.9999867","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999867","url":null,"abstract":"In this contribution, the influence of impedance matching for sensors that incorporate phase measurements in a one-port reflection setup is elaborated in detail. The developed theoretical basis is validated by three-dimensional electromagnetic simulations that are corroborated by reflection measurements of a metamaterial-based, resonant near-field sensor with varying impedance matching conditions.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128309855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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